Carriage for type-writing machine.



PATENTED JULY 24, .1906.

J. B. SEGOR- CARRIAGE FOR TYPE WRITING MACHINES.

APPLICATION FILED SEPT. 7. 1904.

PATBNTED JULY 24, 1906. J. B. SEGOR.

CARRIAGE FOR TYPE WRITING MAUHINBS.

APPLICATION FILED SEPT. 7. 1904.

FIEF PATENTBD JULY 24, I906.

J. B. ,SECOR. CARRIAGE FOR TYPE WRITING MA-GHINBS.'

I... um

APPLICATION FILED SEPT. 7. 1904.

' 5o inclined back of; the

v-UNI TED STATES PATENT om n "JEROME e. sso'os, or DERBY, CONNECTICUT, AssieNoa' ro "Tris WILLIAMS TYPEWRITER COMPANY, OF

A CORPORATION OF IOWA.

DERBY; CONNECTICUT,

CARRlAGE FOR TYPEe-WFHTING MAomNsis.

Specification of iietters Patent. 7

Patented July 24, ieoe. .7

Application filed September 7, 1904. Ele'z'lal ll'o. 228.678-

to imparting variable rotation to the platen for line-spacing and brake and sto mechanism for controlling the rotation of t e laten and accurately regulating its position or line adjustnaent; I 1 i 1- 1 I In the'accompanying drawings, 'F i ure 1 is a'plan view of a type-writer carriage i ustrat mg my invention Showing a paper-holding bail, hereinafter ascribed, thrown back-for {the introduction of a new sheet. Fig. 2'is a. front viewjofthesame showing the pa 'er .1 holding bailinposition oroperation'.1 F1g;3f

is antend'view of the carriage. Fig.4 is a de l p tail end view; partly in section and with some parts omitted,'shovvingthe line-spacing (le 3.5

tio'n jshowin vthe aper-holding 'ail' and omitting the in'e-sp cing devices, Fig. 6is' a detail plan of part ofthe line-spacing device. Fig. 7 isa transverse section showin I another Ipart of the same. Fi .8 is a detai rearview of a device for retracting the platendetent and'brake, respectively. "Fig. 9 is .a detailend view of an elastic-mar irbguide, showing in' section the horizonta bar on whiohitslides';

v g 1 represents the cylindrical piston, and 2 a ratchet gear-wheel mounted on its end as'a medium for communicating step-hy-ste rotatio'n-to the platen for lines doing. 1 his o 1'-otation is imparted by a sliding pawl 3, pressed by a sprin 4 into enga en'ient with the successive test of the rate etwheel 2. The shank of the pawl is formed as a rack 5,, engaged by the teeth of a segment ear 6, pivoted at 7, aotuat6d bye horizontalat umh-.

1 iever'8, and retracted to normal position by a p p v p platen and ltsaccessories, the weight o'fgthe The feed movement of the pawl 3 is limited spring by an adjustable stop-pin 10,1With which the This stop-pin is earrie hy'a finger lev'er 11',

' efiect the feed awl-toothcontacts.

' which may 'he fulcrumed on the axis oi the platen and is movable into either of three I (more or less) positions toshift the position oi the stop-pin10, and thereby determine the 5 extent of rotation imparted to the platen at each active forward or feed movement of the. pawl 3; The setting-lever ll is held in adpisted position by engagement of the stop :pin in any one of the notches 13 14 15' in a spring-latch 16. The latch '16 being lifted,

t e finger-lever 11 is moved orward or back,

as desired, to setthestop-pin 10 in the sei lected notch, andithe-latch being released is drawn down by a spring 17, hearing on the shoulder lfi 'of therllatch 16; If the stop-pin 10 be thus set and held in the foremost notch I 113, it will stop the feed movement of the pawl when it has rotated the platen to the extentv of one tooth, effecting sin leeline s acin '.--,7o

Ifthe sto pin 10 be set in t e s'eo'oni note 14, it wil ermit the awl 3 to rotatethe laten tot e extent 0 two teethfefiectin noble-line spacing, and if set in the thin notch 15 triple s acing will result. The? i e 5'is an end view; artl insea normal position 0 the pawlto which itiia dream by the spring 9 is determined by a suitable stop 18, which maybe arran ed for contact of either the awl itself orlt e segmerit-lever 6. A fixe stud 12 liftiithe pawl out of contact with the'teeth 2 as it is withdrawn to normal position.

19 represents the paper-guide table, which isformed with a lon itudinal recess 20 for a purpose hereinafter escribed. 8 5

I 21 represents rollers mounted on-springs V22 pressing the paper, against the laten to I of the'paper by ro'tatihii of the platen.

guide clips 23. The platen and guide-table are mounted in a vertically-movable'frame to effect the shift oi' the plate -as customary with host-strike machines, so as to print either one or; two 5 types carried by each type-bar. in order-to re uce the ower required to thusraise the vertioally-shifting frame and arts carried thereby is partially counter alanced by [00 rings 24.' The vertically-shifting frame On the front edge of the table are paper brake shoe 25, pivoted at 26 and pressed by hand in interden'tal position for the purpose I permits the spr ng-arm 30 to restnormally in roller 29 in engagement with the rate'hetgear in the ordinary operation of the platen, so 4 as to automatically set and hold'the platen tent-roller 2 9-fr-on1 engagement with the tracts both? detent-rollef and brake-shoe from rollers 39', turning on fixed studs.

inner-shaft 3:! and its end; cams 3.8, so as to provision is made for retracting the detentreplacing of the latter .when' necessary.

a spring 30 into contact with the rigid cylindrical end28 of the platen, which projects endwise beyond the yielding platen-surface. The platen-frame also carries a detent-roller 29,. mounted on the spring-arm 30, which resses it into engagement with the ratchet eed-wheel 2, so as to accurately locate the platen in its rotation as to line-spacing;

To enable adjustment of the platen by of printing between the lines when required,

roller 29 without retracting the brake shoe 25, and in order to facilitate removal and replacing of the laten provision is made for retracting the rake and roller simultaneously. This retracting device isartly shown in Fig. 2 and is best'shown in *igs; 4, 7, and 8. A short shaft 31 is mounted to turn in the bracket of the brake-shoeand .carries a cam 32and a milledhead or button 33 for turnin it. The shaft 31 passes througha horizonta slot in the platen frame to permit the toand-fro movement of the brake, and the backward movement is imparted opposition to pressure ofthe spring by engagement of the cam 32 with a rigid stud 34 on the platen-frame. The shaft 31 is formed with a flat face or cut-away portion, (shown in Fig. 7' and indicated b dotted lines in Fig. 4,) which the position there shown, with the detentaccurately in position for printing orfthe revv quired line. N ow if it be desired to set the platen in an intermediate position for printing between lines or above the line or so as to conform the printing to date-lines, &'c., on the paper the knob 33 is turned to the right, so as to remove the flat face of the shaft from the spring-arm 30 of the detentroller and bring the round surface of the shaft or an eccentric surface thereon against the said spring-arm, thereby retracting the deratchet-gear 2,-but leaving the brake-shoe 25 in contact with the platen, so as to hold it by friction in an osition in which it may be set. VVhent e fqiob 33 is turned to the left, the pressure'of the cam 32 on the stud 34 rethe platen,-so as to facilitate the removalor represents ressure-rollers at front of the platen carrie by hollow shaft 36, turning on an inner shaft 37, on the ends of which are keyed cams 38, bearing against friction- One of the cams 3.8 is provided with a projecting fingerpiece 40,, the ,.depression of which turns the semen retract the rollers 35 from the platen against which they are normally held by springs 41.

42 represents push-rods for manual opera I (Not shown.) 43 is a knob on shaft 4 3 for turningthe platen by hand 44 represents aclutch device carried by the knob-shaft 43*: for disengaging the platen and permitting its removal, and 45 a yoke or stop arm pivoted at 46' and operated. by a vertical arm 47 for locking the knob-shaft 4.3 and its clutch in engagement'with the platen or releasing it when the platen is to be taken out.

48 re resents elastic margin or column guides -1tted to slide longitudinally of the platen on the horizontal scale-bar l9.

50 represents a bail pivoted by the ends of its arms at 51 in the platen-frameand resting within the recess, 20 in the paper-feed table when turned back out of use, as shown in Fig.1 and Pi 3 and in full lines in Fig. 5.

Its useis to ho d very stiff paper to the platen,

for which purpose it is turned forward over the paper to the position shown in Fig. 22nd in dotted lines in Fig, 5. lfnordinary cases and with common flexible paper the paperguides 23 alone suffice for this function.

Having thus described my invention, the

following is what I claim. as new therein and desire to secure by Letters Patent:

1. In a type-writing machine, a variableline-spading device comprising a rotatable platen, a ratchet-wheel on the platen-shaft through which the platen is rotated, a reciprocating sliding pawlengaging with the ratchet-wheel to impart step-by-step rotation thereto and a pivoted lever having a sto -pin engaging with'the back of the awl to ock it -in engagement with a tooth of the ratchet-wheel and limit the rotation of the platen, as described. I I

2. In a type-writing machine, a variable line spacing device comprising a rotatable platen, a ratchet-Wheel on the platen-shaft through which the platen is rotated, a reciprocating slidingpawl engaging with the ratchet-wheel to impart step-byestep rotation thereto, a pivoted stop-lever having a pin engaging wit a the back of the pawl to arrest its movement in one direction and a sprin pressed latch having a series of notches 3. The combination of a rot atableplaten,

a ratchet-gear thereon, a sliding pawl engag rotation thereto and provi ed with a rack, a segment-gear meshing with said rack, a ger-leVer operating said segment-rack to impart reciprocating movement to the (pawl, and a shif-table device automatically eter:

irig said ratchet-gear to inkiipart step-by-etep mining the extentof movement imparted to the pawl and the platen by each movement of the finger-lever, substantially as set forth.

4. In a type-writing machine, the combination of a rotatable platen, a ratchet wheel oted to the carriage independently of the detent and a rotatable cam-bearing between the detent-spring and the brake-shoe adapted by its rotary adjustment to press the brake-shoe against a'suitable brakesurface on the platen by the force of'the detentspring while retracting the detent from the ratchet-wheel, substantially as described.

5. In a type writin machine, the combination of a rotatable p aten having a ratchetwheel'through which step-by-step rotation is imparted thereto and a brake-surface adjacent t'o said ratchet-wheel,- a spring-detent holdingtheplaten in accurate position of line adjustment, a friction-brake pivoted on the carriage-frame and an eccentric shaft forming a bearing mechanism between the detent-spring and brake-shoe and' also having a bearing on the carriage-frame whereby under different rotary adjustment of the shaft the brake-shoe may be pressed against the platen-surface by the detent-spring or.

both detent and brake-shoe held out of contact with the platen, substantially as set forth.

6. A line-spacing-device for type-writing machines, comprising a spring-detent engaging with the ratchet-wheel through which the platen receives its step by-step rotation, a

brake-shoe held in contact with a brake-surface on the platen by pressure of the detents ring and a cam-shaft operating to lock both t e spring-detent and the brake-shoe out of contact with the platen, substantially as set forth.

7. A line-spacing device for type-writing machines, comprising a spring-detent engaging with the ratchet-wheel through which the platen receives its ste -by-step rotation, a brake-shoe adapted to e pressed by the detent-spring into contact with a brake-surface on the platen and an eccentric shaft capable of different positions of rotary adjustment in one of which it forms a medium of pressure between the detent-spring and the brake shoe and in another of which it locks both detent and brake-shoe out of contact with the platen, substantially as set forth.

8. A line-spacing device for type-writing machines, comprising a spring-detent engage ing with the ratchet wheel through w 'ch the platen receives its stepbystep rotation, a brake-shoe adapted to engage with a brak surface on the platen and an inter osed camshaft capable of three positions oi rotary adjustment in one of which it permits engagement of the detent with the ratchet-wheel in another of which it retracts the spring-detent and communicates pressure from the detent spring to the brake shoe and in the third of which it looks. both detent and brake-shoe out of reach of the platen, leaving the latter i'ree, substantially as described.

JEROME B. SECOR. 

